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path: root/.config/nvim/lsp/fsautocomplete.lua
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---@brief
---
--- https://github.com/fsharp/FsAutoComplete
---
--- Language Server for F# provided by FsAutoComplete (FSAC).
---
--- FsAutoComplete requires the [dotnet-sdk](https://dotnet.microsoft.com/download) to be installed.
---
--- The preferred way to install FsAutoComplete is with `dotnet tool install --global fsautocomplete`.
---
--- Instructions to compile from source are found on the main [repository](https://github.com/fsharp/FsAutoComplete).
---
--- You may also need to configure the filetype as Vim defaults to Forth for `*.fs` files:
---
--- `autocmd BufNewFile,BufRead *.fs,*.fsx,*.fsi set filetype=fsharp`
---
--- This is automatically done by plugins such as [PhilT/vim-fsharp](https://github.com/PhilT/vim-fsharp), [fsharp/vim-fsharp](https://github.com/fsharp/vim-fsharp), and [adelarsq/neofsharp.vim](https://github.com/adelarsq/neofsharp.vim).
---

local util = require 'lspconfig.util'

---@type vim.lsp.Config
return {
  cmd = { 'fsautocomplete', '--adaptive-lsp-server-enabled' },
  root_dir = function(bufnr, on_dir)
    local fname = vim.api.nvim_buf_get_name(bufnr)
    on_dir(util.root_pattern('*.sln', '*.fsproj', '.git')(fname))
  end,
  filetypes = { 'fsharp' },
  init_options = {
    AutomaticWorkspaceInit = true,
  },
  -- this recommended settings values taken from  https://github.com/ionide/FsAutoComplete?tab=readme-ov-file#settings
  settings = {
    FSharp = {
      keywordsAutocomplete = true,
      ExternalAutocomplete = false,
      Linter = true,
      UnionCaseStubGeneration = true,
      UnionCaseStubGenerationBody = 'failwith "Not Implemented"',
      RecordStubGeneration = true,
      RecordStubGenerationBody = 'failwith "Not Implemented"',
      InterfaceStubGeneration = true,
      InterfaceStubGenerationObjectIdentifier = 'this',
      InterfaceStubGenerationMethodBody = 'failwith "Not Implemented"',
      UnusedOpensAnalyzer = true,
      UnusedDeclarationsAnalyzer = true,
      UseSdkScripts = true,
      SimplifyNameAnalyzer = true,
      ResolveNamespaces = true,
      EnableReferenceCodeLens = true,
    },
  },
}